Does it make sense to utilize Education as it is listed in the data? What are the issues with leaving it this way? b$.$ After addressing the issues in part $($a$),$ run a linear regression using Experience, Management, and the changed Education variables. What is the new model? Are all the variables signi$$cant$?$ c$.$ Now create a model to allow for the possibility that the increase in Salary may be different between managers and nonmanagers, with respect to their years of experience. What are the results? $*$d$.$ Finally, create a model that incorporates the idea that Salary might increase, with respect to years of experience, at a different rate between employees with different education levels.